Communication system and communication method

Abstract

[Problem] Efficiently utilizing physical resources in a communication system that builds a virtual network based on various requirements.[Solution] A communication system (10) includes a Spine switch group (12) consisting of a plurality of Spine switches (102), a Leaf switch group (14) consisting of a plurality of Leaf switches (104), a plurality of servers (106) connected to any one of the plurality of Leaf switches (104), and a controller (110) configured to build a virtual network on the physical resources. At least one of the Spine switch group (12) and the Leaf switch group (14) is constituted by a mix of switch devices having different performance. The controller (110) selects physical resources to be used for building the virtual network based on the desired performance of the virtual network.

1 . A communication system comprising:
 physical resources including:
 a Spine switch group consisting of a plurality of Spine switches; 
 a Leaf switch group consisting of a plurality of Leaf switches; and 
 a plurality of servers connected to any one of the plurality of Leaf switches; and 
   a controller configured to build a virtual network on the physical resources,   wherein   at least one of the Spine switch group and the Leaf switch group is constituted by a mix of switch devices having different performance, and   the controller is configured to select a physical resource of the physical resources used to build the virtual network based on desired performance of the virtual network.   
     
     
         2 . The communication system according to  claim 1 , wherein the controller is configured to obtain performance information of each of the plurality of Spine switches and each of the plurality of Leaf switches, sequentially monitor an operational status of each of the plurality of Spine switches and each of the plurality of Leaf switches, and select a Spine switch of the plurality of Spine switches, a Leaf switch of the plurality of Leaf switches, and a server of the plurality of servers to be used to build the virtual network. 
     
     
         3 . The communication system according to  claim 1 , wherein the Spine switch group is constituted by optical path switches, and the Leaf switch group is constituted by a mix of switch devices having different performance. 
     
     
         4 . A communication method for building a virtual network on physical resources including a Spine switch group consisting of a plurality of Spine switches, a Leaf switch group consisting of a plurality of Leaf switches, and a plurality of servers connected to any one of the plurality of Leaf switches, the communication method comprising:
 selecting a physical resource of the physical resources to be used for building the virtual network based on desired performance of the virtual network,   wherein at least one of the Spine switch group and the Leaf switch group is constituted by a mix of switch devices having different performance.   
     
     
         5 . The communication method according to  claim 4 , further comprising:
 obtaining performance information of each of the plurality of Spine switches and each of the plurality of Leaf switches, and monitoring an operational status of each of the plurality of Spine switches and each of the plurality of Leaf switches,   wherein, in the resource selection step, a Spine switch of the plurality of Spine switches, a Leaf switch of the plurality of Leaf switches, and a server of the plurality of servers to be used for building the virtual network are selected based on the performance information obtained in the performance information obtainment step.   
     
     
         6 . The communication method according to  claim 4 , wherein the Spine switch group is constituted by optical path switches, and the Leaf switch group is constituted by a mix of switch devices having different performance.